zhijiangW commented on a change in pull request #10083: 
[FLINK-14472][runtime]Implement back-pressure monitor with non-blocking outputs.
URL: https://github.com/apache/flink/pull/10083#discussion_r345634076
 
 

 ##########
 File path: 
flink-runtime/src/test/java/org/apache/flink/runtime/rest/handler/legacy/backpressure/BackPressureTrackerTestUtils.java
 ##########
 @@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.rest.handler.legacy.backpressure;
+
+import org.apache.flink.api.common.ExecutionConfig;
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.JobManagerOptions;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.blob.VoidBlobWriter;
+import org.apache.flink.runtime.executiongraph.ExecutionGraph;
+import org.apache.flink.runtime.executiongraph.ExecutionJobVertex;
+import org.apache.flink.runtime.executiongraph.JobInformation;
+import org.apache.flink.runtime.executiongraph.TestingSlotProvider;
+import org.apache.flink.runtime.executiongraph.failover.RestartAllStrategy;
+import org.apache.flink.runtime.executiongraph.restart.NoRestartStrategy;
+import org.apache.flink.runtime.jobgraph.JobVertex;
+import org.apache.flink.runtime.jobgraph.JobVertexID;
+import org.apache.flink.runtime.testingUtils.TestingUtils;
+import org.apache.flink.runtime.testutils.DirectScheduledExecutorService;
+import org.apache.flink.util.SerializedValue;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.concurrent.CompletableFuture;
+
+/**
+ * Utility methods for {@link BackPressureStatsTrackerImplTest} and {@link 
BackPressureRequestCoordinatorTest}.
+ */
+public class BackPressureTrackerTestUtils {
+
+       public static ExecutionJobVertex createExecutionJobVertex() throws 
Exception {
+               return new ExecutionJobVertex(
+                       createExecutionGraph(),
+                       new JobVertex("TestingJobVertex", new JobVertexID()),
+                       4,
+                       
JobManagerOptions.MAX_ATTEMPTS_HISTORY_SIZE.defaultValue(),
+                       Time.milliseconds(10000),
+                       1L,
+                       System.currentTimeMillis());
+       }
+
+       public static ExecutionGraph createExecutionGraph() throws IOException {
 
 Review comment:
   We can change it to public instead because this constructor was introduced 
for tests only for simple, and it should not be limited to use only inside 
package.

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